package com.bangcommunity.bbframe.mq;

/**
 * Created by tanghc on 17/2/3.
 */
import com.bangcommunity.bbframe.common.utils.lang.StringUtils;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.apache.kafka.clients.consumer.KafkaConsumer;

import java.util.Arrays;
import java.util.Properties;

public class KafkaConsumerExample {
    public static void main(String[] args) throws InterruptedException {
        new Thread(new Con("t1")).start();
        new Thread(new Con("t2")).start();
        new Thread(new Con("t3")).start();
    }

    public static class Con implements Runnable {
        private String group;

        public Con(String group) {
            this.group = group;
        }

        @Override
        public void run() {
            start(group);
        }
    }

    public static void start(String group) {
        Properties props = new Properties();
        props.put("bootstrap.servers", "localhost:9092");
        props.put("group.id", group);
        props.put("enable.auto.commit", "true");
        props.put("auto.commit.interval.ms", "1000");
        props.put("session.timeout.ms", "30000");
        props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
        props.put("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
        KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props);
        consumer.subscribe(Arrays.asList("topic1", "topic2", "topic3", "topic4", "topic5",
                StringUtils.join(new Object[] { "qtuc", "basedata", "t1" }, "_")));
        while (true) {
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            ConsumerRecords<String, String> records = consumer.poll(100);
            for (ConsumerRecord<String, String> record : records)
                System.out.printf("thread= %s, offset = %d, key = %s, value = %s\n", Thread.currentThread().toString(),
                        record.offset(), record.key(), record.value());
        }
    }
}